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SN2PR03MB1935; 5:KXJX6Vryf9U7PBu+CtI0E9xeGscRstGfZqTFJf0qy6apAMivmmnj6IozVTHjRmVNLTfRQZ/ZCosdM1gS5UW3iiduaWRx8jbeLjh5+fjJnPn86k2iD2sZZsEB2knc10MGGdI5cJBhS+ybK0DxsYY5lqvgmmgebUPkcQx/uKdD5MU=; 24:WbrK98yMvjGlXg9S4KS/tvd5Ybsvgd+EhJNIdDm7jTwRLPlMVwYxK6gdOfNjQQ0qIPKPcqwsb2snWt8gqdgZDcpYXV6DrGb9XB0FnF50Q70= SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Jun 2016 15:06:11.9959 (UTC) X-MS-Exchange-CrossTenant-Id: 5afe0b00-7697-4969-b663-5eab37d5f47e X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=5afe0b00-7697-4969-b663-5eab37d5f47e; Ip=[192.88.158.2]; Helo=[az84smr01.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN2PR03MB1935 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160629_080635_866457_A5084FD7 X-CRM114-Status: GOOD ( 14.31 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aisheng.dong@nxp.com, anson.huang@nxp.com, mturquette@baylibre.com, sboyd@codeaurora.org, linux-kernel@vger.kernel.org, shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This can be useful when clock core wants to enable/disable clocks. Then we don't have to convert the struct clk_core to struct clk to call clk_enable/clk_disable which is a bit un-align with exist using. And after introduce clk_core_{enable|disable}_lock, we can refine clk_enable and clk_disable a bit. As well as clk_core_{enable|disable}_lock, we also added clk_core_{prepare|unprepare}_lock and clk_core_prepare_enable/ clk_core_unprepare_disable for clock core to easily use. Cc: Michael Turquette Cc: Stephen Boyd Cc: Shawn Guo Signed-off-by: Dong Aisheng --- drivers/clk/clk.c | 85 +++++++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 63 insertions(+), 22 deletions(-) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 95b80aeb8c9d..55e62bac0fb4 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -591,6 +591,13 @@ static void clk_core_unprepare(struct clk_core *core) clk_core_unprepare(core->parent); } +static void clk_core_unprepare_lock(struct clk_core *core) +{ + clk_prepare_lock(); + clk_core_unprepare(core); + clk_prepare_unlock(); +} + /** * clk_unprepare - undo preparation of a clock source * @clk: the clk being unprepared @@ -607,9 +614,7 @@ void clk_unprepare(struct clk *clk) if (IS_ERR_OR_NULL(clk)) return; - clk_prepare_lock(); - clk_core_unprepare(clk->core); - clk_prepare_unlock(); + clk_core_unprepare_lock(clk->core); } EXPORT_SYMBOL_GPL(clk_unprepare); @@ -645,6 +650,17 @@ static int clk_core_prepare(struct clk_core *core) return 0; } +static int clk_core_prepare_lock(struct clk_core *core) +{ + int ret; + + clk_prepare_lock(); + ret = clk_core_prepare(core); + clk_prepare_unlock(); + + return ret; +} + /** * clk_prepare - prepare a clock source * @clk: the clk being prepared @@ -659,16 +675,10 @@ static int clk_core_prepare(struct clk_core *core) */ int clk_prepare(struct clk *clk) { - int ret; - if (!clk) return 0; - clk_prepare_lock(); - ret = clk_core_prepare(clk->core); - clk_prepare_unlock(); - - return ret; + return clk_core_prepare_lock(clk->core); } EXPORT_SYMBOL_GPL(clk_prepare); @@ -698,6 +708,15 @@ static void clk_core_disable(struct clk_core *core) clk_core_disable(core->parent); } +static void clk_core_disable_lock(struct clk_core *core) +{ + unsigned long flags; + + flags = clk_enable_lock(); + clk_core_disable(core); + clk_enable_unlock(flags); +} + /** * clk_disable - gate a clock * @clk: the clk being gated @@ -712,14 +731,10 @@ static void clk_core_disable(struct clk_core *core) */ void clk_disable(struct clk *clk) { - unsigned long flags; - if (IS_ERR_OR_NULL(clk)) return; - flags = clk_enable_lock(); - clk_core_disable(clk->core); - clk_enable_unlock(flags); + clk_core_disable_lock(clk->core); } EXPORT_SYMBOL_GPL(clk_disable); @@ -758,6 +773,18 @@ static int clk_core_enable(struct clk_core *core) return 0; } +static int clk_core_enable_lock(struct clk_core *core) +{ + unsigned long flags; + int ret; + + flags = clk_enable_lock(); + ret = clk_core_enable(core); + clk_enable_unlock(flags); + + return ret; +} + /** * clk_enable - ungate a clock * @clk: the clk being ungated @@ -773,19 +800,33 @@ static int clk_core_enable(struct clk_core *core) */ int clk_enable(struct clk *clk) { - unsigned long flags; - int ret; - if (!clk) return 0; - flags = clk_enable_lock(); - ret = clk_core_enable(clk->core); - clk_enable_unlock(flags); + return clk_core_enable_lock(clk->core); +} +EXPORT_SYMBOL_GPL(clk_enable); + +static int clk_core_prepare_enable(struct clk_core *core) +{ + int ret; + + ret = clk_core_prepare_lock(core); + if (ret) + return ret; + + ret = clk_core_enable_lock(core); + if (ret) + clk_core_unprepare_lock(core); return ret; } -EXPORT_SYMBOL_GPL(clk_enable); + +static void clk_core_disable_unprepare(struct clk_core *core) +{ + clk_core_disable_lock(core); + clk_core_unprepare_lock(core); +} static int clk_core_round_rate_nolock(struct clk_core *core, struct clk_rate_request *req)